I don't know if Tesla originated the approach, but they're the first I'd ever heard of doing it by my camera or radar or anything like that. I remember my first reaction was befuddlement, when highways cost like $xxx million per mile, why would the trivial cost of dropping electronic friendly markers for lanes and such be anything but a trivial 0.1% cost that should facilitate self driving from the road construction end as a primary means of situating self-driving vehicles?

Instead you have cars with that forever risk of death to their passengers when self-driving due to the non deterministic factor of not having a highway equivalent of train rails.